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• Mobile Web Applications – A guide for professional development

  - by JuergenKress

  (Tobias Bosch, Stefan Scheidt, Torsten Winterberg / Opitz Consulting Deutschland GmbH). There is a real hype around mobile solutions. Smartphones and tablets are everywhere. Frontend architecture is changing quickly to adopt cross browser technologies like HTML5 and extensive JavaScript-based development. In this book we introduce our software development process to build test-driven Single-Page JavaScript Web Applications, which will be the future next to native apps. We start with a short introduction of our RYLC showcase (know from our SOA articles), give a very short introduction to JavaScript, then talk about jQuery Mobile, Angular JS, Testing, Backend-communication and we close with deploying our RYLC-Webapp as a hybrid app using the PhoneGap (Cordova) framework. Don’t expect too much theory – it’s a practical guide explaining how RYLC Web App was built, to kickstart your own development. Currently only available in German as paperback and eBook. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: adf mobil

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• Up, down, right arrow keys and delete key not working

  - by user210780

  I have already read Delete and arrow keys not working and tried what is written there. I have also tried restarting my computer. I have also searched elsewhere for answers, but I haven't found any solution. I am using Ubuntu 12.04, and there were not problems yesterday, but for the last hour, I've had the following problem. When I press the up or the right arrow, nothing happens. When I press the down arrow, it doesn't make anything go down, but something appears in the upper right corner of my screen: http://i.imgur.com/pmnFOCD.png When I press the delete key, nothing gets deleted, but something appears in the upper right corner of my screen: http://i.imgur.com/Wu9czel.png The left arrow still works. Can anybody help me get my three arrow keys and delete key back?

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• Why does my computer just keep restarting while trying to install Ubuntu 13.04 (x86) from USB alongside Windows 7?

  - by Sumit Chahal

  I have checked the other questions, but none of them match my problem (the ones that do don't have satisfactory answers). I downloaded the Ubuntu 13.04 iso and burned it to my USB device following the given instructions. I was also able to boot the Ubuntu setup from it by changing the boot sequence so that the USB device is now at the top. But I am only able to use the "trial" version of Ubuntu. Every time I tick "Install Ubuntu alongside Windows" and click "Continue", the computer just restarts and I see the same Try-Ubuntu-or-install-it menu. I have tried pressing any key when that little icon appears at the bottom, but it is not at all helpful. I also read somewhere that I should eject my USB device after I click "Continue", but doing so just makes the computer run Windows 7 instead.

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• Is it a good practice to use branches to maintain different editions of the same software?

  - by Tamás Szelei

  We have a product that has a few different editions. The differences are minor: different strings here and there, very little additional logic in one, very little difference in logic in the other. When the software is being developed, most changes need to be added to each edition; however, there are a few that don't and a few that needs to differ. Is it a valid use of branches if I have release-editionA and release-editionB (..etc) branches? Are there any gotchas? Good practices? Update: Thanks for the insight everyone, lots of good answers here. The general consensus seems to be that it is a bad idea to use branches for this purpose. For anyone wondering, my final solution to the problem is to externalize strings as configuration, and externalize the differing logic as plugins or scripts.

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• How and when is old-releases.ubuntu.com updated?

  - by muru

  The old-releases.ubuntu.com mirror hosts the repositories for EOL Ubuntu releases. The main page currently lists up to 11.10 (or 12.04.3 if you count point upgrades), but the dists page lists up to 13.04. Why the discrepancy? When will the main page be updated? When will the newest EOL release (13.10) be shifted here? I'd like documentation backing up answers, please. Priority of documentation: Statements by Mark Shuttleworth (on his blog or other public statements) Pages from the Official Ubuntu documentation Ubuntu mailing list discussions, Launchpad bug reports (or questions) or blueprints, etc. IRC discussion logs for official Ubuntu channels Random gossip on the street Community Wiki.

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• Design leaderboard ratings for quiz games

  - by PeterK

  Back in March 2011 i started the following post: How to design a leaderboard? Now my quiz game have been out for approximately a year and sold pretty decently. I am working on to update the game design and is again looking into the leaderboard design to make it better as i am not happy with it. Currently i rate players on number of correct answers, which is not good as it does not consider things like number of games, difficulty levels etc. I also have "extended" stats behind the UITableView (Leaderboard). A player can play based on three levels of difficulty: hard, medium or easy Difficulty levels can be mixed between players in a game Each game can be one to six players, so there can be single games or duels Between 2 and 30 questions per game As i am considering integrating Game Center Leaderboard i need to design a better rating system so i would like to ask for some ideas how to do the rating based on the above. I am thinking about how much a point would be worth and what it includes.

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• How do we install Unity-2D and dependencies offline?

  - by Takkat

  We have installed 11.04 32-bit on an old machine that has no internet connection and with a graphics card that is not suitable for running Compiz or Unity. Still, we would like to run Unity-2D on this machine. We are aware of answers to this Question. Sadly Keryx will not run on 11.04 32-bit because of unmet dependencies. Building an offline repository is not an option because of limited storage capacity. Is there any convenient other way to find, download, install, and eventually update unity-2 and all dependencies (preferably from an OS independent download path)?

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• what knowledge would I need to make a good simulation games

  - by Skeith

  I have an idea for a game like theme park but don't know how simulation games are made. I am not some noob on his first game so I appreciated constructive answers instead of "its hard, don't do it". What I want is to know how simulation game mechanics are put together. I figure it would be heaver on the AI than normal games and not knowing much about AI would like to know some programming techniques I should look into for this style game. specific techniques please not just a book on ai. what sort of architecture would be used? I guess it would have some sort of probability engine with pre designed events that are triggered based on the AI state. Would it use a FSM or be purely event driven ? Any information on how a sims game functions would be cool.

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• SQL Saturday #220 Atlanta May 2013!

  - by Most Valuable Yak (Rob Volk)

  If you love SQL Server training and are near the Atlanta area, or just love us so much you're willing to travel here, please come join us for: SQL SATURDAY #220! The main event is Saturday, May 18.  The event is free, with a $10.00 lunch fee.  The main page has more details here: http://www.sqlsaturday.com/220/eventhome.aspx We are also offering pre-conference sessions on Friday, May 17, by 5 world-renowned presenters: Denny Cherry: SQL Server Security Register! Site Twitter Adam Machanic: Surfing the Multicore Wave: Processors, Parallelism, and Performance Register! Site Twitter Stacia Misner: Languages of BI Register! Site Twitter Bill Pearson: Practical Self-Service BI with PowerPivot for Excel Register! Site Twitter Eddie Wuerch: The DBA Skills Upgrade Toolkit Register! Site Twitter         We have an early bird registration price of $119 until noon EST Friday, March 22.  After that the price goes to $149, a STEAL when you compare it to the PASS Summit price. :) Please click on the links to register and for more information.  You can also follow the hash tag #SQLSatATL on Twitter for more news about this event. Can't wait to see you all there!

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• apt-get update error - binary-i386, binary-amd64 [duplicate]

  - by magamig

  This question already has an answer here: How can I fix a 404 Error when updating packages? 5 answers When I run: sudo apt-get update It shows me the following error: W: Failed to fetch http://ppa.launchpad.net/directhex/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/directhex/ppa/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. I have googled for solutions, but none of what I found, have worked for me. Please give me your suggestions

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• Come visit us at OOW 2012 B2B Demo Booth!

  - by Nitesh Jain

  You’re invited to visit us at the Oracle B2B Demo POD at Oracle OpenWorld and JavaOne 2012. Please stop by at our booth to see cool demos on EDI X12, EDIFACT and SBRES (used in Airlines industry). We will also be showing integration with OSB, SOA Suite and BAM. Use this opportunity to see the product in action, learn, and get answers to your questions. We will be happy to meet you and hear about your B2B integration usecases and discuss our roadmap. The demo pod will be available at the Fusion Middleware Demo POD area on Monday, October 1 through Wednesday, October 3, 2012. Look forward to seeing you there! Happy OOW 2012! Ref: https://blogs.oracle.com/SOA/entry/come_visit_us_at_oow

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• How do I create a new usergroup?

  - by Sergiu

  I want to do this because I'm trying to fix user permissions from Ubuntu on my Mac OS X partition and Ubuntu doesn't have the "wheel" group that I so desperately need! Please don't trash me for this but I set my whole Mac OS X partition to give read and write access to everyone so I could access and modify everything on it from my dual-booting Ubuntu OS, and now everything is screwed... I don't have the original Mac OS X installation DVD and booting a Mac OS X 10.5.6 DVD gives me kernel panics... The OS installed on that Mac partition is 10.4.11. Is there any hope for me to ever fix it? I don't have money to buy utilities, and I can't use AppleJack either because my permissions are so messed up... None of the posted answers are what I wanted to do. I wanted to add fields to a user that was on my Mac partition, not a user part of the Ubuntu groups. Is that possible?

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• How to change careers

  - by Jack Black

  For the past 4 years I have worked in c# doing web development. I have really enjoyed it, learnt a lot and have a worked hard to get to a position where I am earning good money and enjoy the work. However lately - I have wanted a change. What with the "native renaissance" I would like to change my career from being high level application and web development to more down to the metal native development. I haven't done any c or c++ since Uni over 4 years ago and so I have begun reading text books and websites to brush up. However - one major issue I have is that I have no practical experience with C++ and although I am brushing up on it, there will be a lot I don't know. Most of the jobs I have seen in native code around me all require native experience. The only positions I can find that don't explicitly ask for native experience are junior level positions. In my current role I am a mid level developer and although there would be a lot to learn in a c++ position, I wouldn't class myself as a junior. I guess my question is, how do people solve this issue when changing programming languages for their profession and / or how would you approach this hurdle? Like I said, I would really like to try out native development professionally but I wouldn't want to move back to a junior role. Would employers consider years of managed development and native hobby projects enough experience?

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• Reading cpu temperature Intel Celeron (R) with lm-sensors

  - by tim_a

  I know there are already a lot of questions like this, but non of the answers provided there could fix my problem. I try to read out my cpu temperature with lm-sensors on my ubuntu 10.04 LTS installation but I can't get to work. I did try the command sensors-detect several times but still nothing. My computer is an old PC with an Intel Celeron (R) @ 2.60 GHz. The odd thing is that the hdd temp is shown in the applet but when I type in the terminal sensors I get the error: "No sensors found! Make sure you loaded all the kernel drivers you need." I'm not really interested in the hdd temperature but I think it is strange that these sensors do work in the applet and not in the terminal. This is the output that sensors-detect gives: http://pastebin.com/F4hVKaLU Any suggestions?

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• How can I create a dynamic site that is still search-bot friendly?

  - by zuko

  If I want to have a slide effect between pages. You click a link, it is loaded off to the side and then slides in (pushing the old page off the other side). I can imagine using jQuery to do the PHP and the effects... but how do I do something like this that gracefully degrades for users without Javascript, including bots? Possibly more problematic: what if I wanted to have a sort of mural background across the site, perhaps with a parallax scrolling effect, and sliding to other pages reveals more of the, possibly giant image? Again, I can imagine how to do this with lots of fancy jQuery and PHP but it would heavily rely on those. How can I gracefully degrade in a situation like that? Any pointers, articles or books would be greatly appreciated. I keep trying to search for answers but I just get a lot of "theory"-based, unhelpful blogs.

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• Windows 7 Service Pack 1 is Released: But Should You Install It?

  - by The Geek

  Microsoft has just released the final version of Service Pack 1 for Windows 7, but should you drop everything and go through the process of installing it? Where can you get it? We’ve got the answers for you. If you’ve never installed a service pack before, it’s just a big collection of fixes and changes for your operating system, bundled into a big fat download to make it more convenient if you reinstall—if you’ve kept Windows updated, it should have most of the fixes already installed through Windows Update Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Never Call Me at Work [Humorous Star Wars Video] Add an Image Properties Listing to the Context Menu in Chrome and Iron Add an Easy to View Notification Badge to Tabs in Firefox SpellBook Parks Bookmarklets in Chrome’s Context Menu Drag2Up Brings Multi-Source Drag and Drop Uploading to Firefox Enchanted Swing in the Forest Wallpaper

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• Looking for articles/books on: How do games make money? What models do they use?

  - by cable729

  I'm trying to research the ways in which games make money. I want to know more about the models they use (free/premium, trial/subscription, free-to-play with micro-transactions, etc.). In addition, I want information on which models work for which games, what models are best for which age groups, etc. I've tried my best to find information, and Google hasn't turned anything up at all. I think I'll stop by my University's library and see if there's anything there. This may seem like a broad question, but I'm looking for links and titles of books, not typed-out answers.

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• WebLogic 12c training in Dutch–May 10th & 11th 2012 Utrecht Netherlands

  - by JuergenKress

  Axis into ICT offers you the opportunity to increase your skills. We are organizing ‘Bring Your Own Laptop Knowledge Sessions‘. In a small group of up to 8 people we are going discuss all the practical aspects of WebLogic Server you ever wanted to know. This is not a standard course, but a training where applying the material in practice is of importance. All participants will receive their own virtual machine, which offers you to ability to continue afterwards with your own practice environment. By keeping the groups small we create an informal atmosphere with plenty of room for all your questions or to even discuss your specific situation. The approach is highly interactive; after all you are attending to increase your knowledge. Topics that will be covered Introduction JVM Tuning Deployment Diagnostic Framework Class Loading Security Configure Resources Clustering Scripting Register for this session You are interested in the ‘Bring Your Own Laptop Knowledge Sessions: WebLogic 12c’? Register for one of two possibilities by using the form below. After registration you will receive a confirmation by e-mail. Training will be in Dutch! Date: May 10 & 11 2012 from 09:30 – 17:00 hrs Location: Axis into ICT Headquarters (Utrecht) Expenses: € 700,- per person (VAT excluded) For registration and details please visit our website. Want to promote your event? Let us know Twitter @wlscommunity! WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Axis,education,WebLogic training,WebLogic,WebLogic Community,OPN,Oracle,Jürgen Kress,WebLogic 12c

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• How important is it that you know the C++ standard?

  - by Nim

  I did try searching, but I did not see a similar question (either that or my search terminology was incorrect - if so, feel free to close). I am an avid user of SO, and I notice that there are lots of references to the C++ standard in discussions and answers - and I have to admit, I have never read this particular document, the language makes my eyes hurt... So, the question is, can a C++ developer really code for a living without ever having read this document? Is it really important for us mere mortals who are not in the business of writing compilers?

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• How to write a network game?

  - by TomWij

  Based on Why is so hard to develop a MMO?: Networked game development is not trivial; there are large obstacles to overcome in not only latency, but cheat prevention, state management and load balancing. If you're not experienced with writing a networked game, this is going to be a difficult learning exercise. I know the theory about sockets, servers, clients, protocols, connections and such things. Now I wonder how one can learn to write a network game: How to balance load problems? How to manage the game state? How to keep things synchronized? How to protect the communication and client from reverse engineering? How to work around latency problems? Which things should be computed local and which things on the server? ... Are there any good books, tutorials, sites, interesting articles or other questions regarding this? I'm looking for broad answers, but specific ones are fine too to learn the difference.

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• Why is cleverness considered harmful in programming by some people?

  - by Larry Coleman

  I've noticed a lot of questions lately relating to different abstraction techniques, and answers saying basically that the techniques in question are "too clever." I would think that part of our jobs as programmers is to determine the best solutions to the problems we are given to solve, and cleverness is helpful in doing that. So my question is: are the people who think certain abstraction techniques are too clever opposed to cleverness per se, or is there some other reason for the objection? EDIT: This parser combinator is an example of what I would consider to be clever code. I downloaded this and looked it over for about half an hour. Then I stepped through the macro expansion on paper and saw the light. Now that I understand it, it seems much more elegant than the Haskell parser combinator.

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• Advice on choosing a book to read

  - by Kioshiki

  I would like to ask for some recommendations on useful books to read. Initially I had intended on posting quite a long description of my current issue and asking for advice. But I realised that I didn’t have a clear idea of what I wanted to ask. One thing that is clear to me is that my knowledge in various areas needs improving and reading is one method of doing that. Though choosing the right book to read seems like a task in itself when there are so many books out there. I am a programmer but I also deal with analysis, design & testing. So I am not sure what type of book to read. One option might be to work through two books at the same time. I had thought maybe one about design or practices and another of a more technical focus. Recently I came across one book that I thought might be useful to read: http://xunitpatterns.com/index.html It seems like an interesting book, but the comments I read on amazon.co.uk show that the book is probably longer than it needs to be. Has anyone read it and can comment on this? Another book that I already own and would probably be a good one to finish reading is this: http://www.amazon.co.uk/Code-Complete-Practical-Handbook-Construction/dp/0735619670/ref=sr_1_1?ie=UTF8&qid=1309438553&sr=8-1 Has anyone else read this who can comment on its usefulness? Beyond these two I currently have no clear idea of what to read. I have thought about reading a book related to OO design or the GOF design patterns. But I wonder if I am worrying too much about the process and practices and not focusing on the actual work. I would be very grateful for any suggestions or comments. Many Thanks, Kioshiki

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• HTG Explains: How Antivirus Software Works

  - by Chris Hoffman

  Antivirus programs are powerful pieces of software that are essential on Windows computers. If you’ve ever wondered how antivirus programs detect viruses, what they’re doing on your computer, and whether you need to perform regular system scans yourself, read on. An antivirus program is an essential part of a multi-layered security strategy – even if you’re a smart computer user, the constant stream of vulnerabilities for browsers, plug-ins, and the Windows operating system itself make antivirus protection important. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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• generating maps

  - by gardian06

  This is a conglomeration question when answering please specify which part you are addressing. I am looking at creating a maze type game that utilizes elevation. I have a few features I would like to have, but am unsure as to some of the implementation. I have done work doing fileIO maze generation (using a key to read the file, and then generate the level based on that file), but I am unsure how to think about this with elevation in the mix. I think height maps might be a good approach, but don't know how to represent them effectively. for a height map which is more beneficial XML(containing h[u,v] data and key definition), CSV (item1 is key reference, item2 is elevation), or another approach that I have not thought of yet? When it comes to placing the elevation values themselves what kind of deltah values are appropriate to have it noticeable at about a 60degree angle while not really effecting gravity driven physics (assuming some effect while moving up/down hill)? I am thinking of maybe going to procedural generation at some point, but am wondering if it is practical to have a procedurally generated grid (wall squares possibly same dimensions as the open space squares), or if designing to a thin wall open spaces is better? this decision will effect the amount of work need on the graphics end for uniform vs. irregular walls. EDIT: game will be a elevation maze shooter. levels/maps will be mazes with elevation the player has to negotiate. elevations will have effects on "combat" vision, and movement

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• Handling SMS/email convergence: how does a good business app do it?

  - by Tim Cooper

  I'm writing a school administration software package, but it strikes me that many developers will face this same issue: when communicating with users, should you use email or SMS or both, and should you treat them as fundamentally equivalent channels such that any message can get sent using any media, (with long and short forms of the message template obviously) or should different business functions be specifically tailored to each of the 3? This question got kicked off "StackOverflow" for being overly general, so I'm hoping it's not too general for this site - the answers will no doubt be subjective but "you don't need to write a whole book to answer the question". I'm particularly interested in people who have direct experience of having written comparable business applications. Sub-questions: Do I treat SMS as "moderately secure" and email as less secure? (I'm thinking about booking tokens for parent/teacher nights, permission slips for excursions, absence explanation notes - so high security is not a requirement for us, although medium security is) Is it annoying for users to receive the same message on multiple channels? Should we have a unified framework that reports on delivery or lack thereof of emails and SMS's?

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